Printing-press chase



fsept'.4,192s. `1,682,7152.

R. MccAHAN -PRINTING PRESS CHASE Origingl Filed July 5, 1923 '3 Sheets-Sheet, 1

Sept. 4, 1928.

R. MCCAHAN PRINTING PRESS CHASE www sept. 4,1928. 1,682,762

R. MCCAHAN PRINTING PRESS CHASE Original Filed July 5, 1923 3 Sheets-Sheet 5 .Lm- 'vy 2z 44.9

provided with a bolt hole 22 for' receiving.

a dowel pin 23 on one end of the longitudinal bar and a spring plungerbolt 23 on the other end of the longitudinal.` bar, by

means of which the bar may be readily inserted and detachably secured in the master chase, as may be desired.

Di'erential sticks of furniture 24, 24 and 2a 'are provided, of different lengths and widths according to their place of use, and each stick is provided with a bevel 15a and a shoulder 15a on its end to fit and abut the inner edge of one of the longitudinal bars, for use in blocking and filling in the space between the ends of a smaller chase and the end bars of amaster chase. `One of these sticks of furniture is preferably provided` with a plate metal face 24 for receiving the thrust of the head of the capstan screw.

The bodies of all the chase bars, ,the insertible barsand, the sticks of furniture, are` preferably made ofthe .same thickness, and the parts areso vproportioned and arranged that when assembled and clamped together the faces thereof are all in the same plane.

A smaller chase isthus made available for use in a job printing press adapted to ref.

`cgeiife the larger chase ,in which it is clamped without any modifications in theordinary holding devicespresent in the press. p

Whenconstructed in accordance with the present improvement, a median chase zmay Vbe centrally located -andyclamped with a larger master chase, by theuse of a narrow` stick of furniture 24 inv one end and Vthe eperationofthe capstan screw 1B in the ctherend, as shown in Figs. 1 and 2;

whereupon a form made `up and Alocked in the median chase may be printed ina presscorresponding to, theA sizeof the larger chase g In a similammanner the smallest chase may be centrally located and clamped within alarger master `chaseby the use of two .insertible bars 21, .one .atl each side,`and the use of wider and narrower sticks of furniture at the ends, by the operation of the capstan screw `against the metal faced side ofthe narrower stick, as shown in Figs. 3 and 4.

By a different arrangement, `the smallest chase may be located and clamped in one con ner of alarger vmaster chaselby the use of' a single `insertible bar 21 andthe wider and narrower sticks of furniture placed together atoneuend .of the smaller chase, by a similar operation of the capstan screw, as shown in Figs. 5 and 6; and in a like manner an elongated narrow `chase may be located and clamped in one side of a larger master chase by the use of asingle insertible bar and a shorter narrow piece of furniture 21d at one end by the operation of the capstan screw against the" other end of the narrow chase, as shown in Figs. 7 and 8. i i

When thus assembled and clamped in a larger master chase, and mounted in a print ing press, it is evident that the smaller chase is securelyheld in, position by a bottom bearing against the `bed of the press and` by the `overlapping beveled edges of the side `bars of the master chase or the insertible longi-` tudinal bars secured therein; and it is also evident that by` varying the location and arrangement of the insertible bars and the sticks of furniture, a `smaller chase may be located in a larger number of diEerent posi` tions within a `larger master chase, thereby permittingtheprinting of a small .form in any desired position )onta sheet of `paper placed upon the platen of a langer.. printing 9 press. v l

It is also evidentthat a median chase can Ahe converted intofa inaster chaseby under llieveling/the .inner edges of the sidebars, by providing one end har 17 a with screw sockets as 161and 16 and providing both end* bars 17? `and 17` with suitable mortisc Vnotches las 19 and bolit `holes .as `2:?.and that the smallest size chase may be located `and `clamped therein; and that by the use ofen insertible bar ofzproper length a narrower chase may be located and clamped in one side thereof by the use of furniture sticks having the proper length andwidth for longitudinallf)7 locating the smaller chase within the ma median master chase as may be desired. ai: In lthe use oftheimproved chases the lock up or stone man uses the 8 x 12 chase as the basis for his work, regardless of the size of sheet upon which the form is to be printed, im and the smallestchase will he used for lock-tt ing up anyform which can be conveniently located thereinywhereupon this chase and form can be bodily located and locked in a master chase for printingin any one of the :in larger presses, withoutany need for the stonetlt man to inquire of the pressrnan :is to the particular chase 1in which the form should .be made up and locked, orrfor .the Pressman to ascertain which `size of press is `available :gli for printing the form; and likewise, any form which is too large for an 8 x 12 chase can be made up and locked in a 10 x 15 chase, withoutthe necessity of inquiring whether a 10 x 15 press is available for use, for the rea- 12:1 son that the 10 x 15 Vchase can be locked and.` clamped in a 12 n 18 master chase for printingr in a 12 X 18 press. A Y

Furthermore. the pressman can` take the forms which are locked in the smaller chases 13u lllll and can locate and lool; the saine in a larger l cha-se, not only fordthetpurpose oi` printing the forni on a larger press, but insucha `manner `as to el rible the torni to be` printed guiar chase of convenient size to receive the torni, after wliich a larger rectangular inaster chase is placed around the slnalller chase with its side or longitudinal barsoverlap ping the side bars oi the smaller chase, and the ends of the smaller cha-se with the :torni therein are then bodily clamped between the end bars of the master chase.

By these means a printing establishment having presses of dililerent sizes is given the saine operating basis as though all the presses were ot one size, and the Werl: el? the i loelr-up man and the pressuian is so sin'iplilied that the condition of the work in 'the press room need not he considered by the lucir-up man in making up the iliorins or by the pressinan in assigning the saine to the different presses.

l claim:

l. A printing press chase .including a side member having an upper bevel on its outer edge, and a larger chase Provided with a `iongitudinal bar detachably secured therein, the smaller chase being located within the larger chase, and the d achable bar of the larger chase having an under bevel on one edge overlapping theupper bevel on the outer edge olf the smaller chase side member. l

it printing press chase including a side member having an upper bevel on its outer edge, and a larger chase provided with a longitudinal bar detachably secured thi-areu in` the smaller chase being located within the larger elias l id the detachable bar of the larger chase having an under bevel on one edge overlapping the upper bevel on. the outer edge et the smaller chase side membra', and ineens for clamping the smaller chase within the larger chase. l

il printing press chase including side bars i. 3er bevels on the outer ednesoit the l Pl i side bars, and a larger chase having longitudinal bars extending between end bars,

. said lonnntudinal bars having` under bevels en their inner edge-salone; a substantial pon tion of their lengths overlapping the Lipper nevels on the outer edges ot the smaller chase side barsV Al, A. `printing press chase including side barrn upper bevols on the outer edges of the `side bars, and a larger chase including longitudinalfbars entendi;igbetween` end bars, said longitudinal barshaiving under bevels on their inneredgesoverlapping the upper @bowels on the outer edges ofthe smaller bevels ou the outer edges of the snniller` chase side bars, and a furniture stick having ends beveled to lit under the overlapping bevels ol' the larger chase longitudinal bars. i

6. ,fi printing press chase including side bars, upper bevels on the outer edges of the side bars, and a larger chase having longitudinal bars extending between end bars, said longitudinal bars having under bevels on their inner edges overlapping the upper bevels on the outer edges of the smaller chase i side bars, and a `furniture stiel; having ends beveled to lit under the overlapping bevels of the `larger chase longitudinal bars, and meano for clamping the smaller chase within the larger chase. Y n W T. il printing press chase including side bars, upper bevels on the outer edges of the side bars, and a larger chase 'having longitudinal bars extending between end bars, said longitudinal barshaving under bevels on their inner edges overlapping the upper bevels `on the outer edges ot the smaller chaseside bars, and a furniture stick having ends beveled and shouldered to it and :ibut the inner edges ot the larger chase longitudinal bars.` 8. i printing press chase including side bars, upper bevels on the outer edges oit the side bars,and a larger chase having longitudinal bars extending between edd bars, said longitudinal bars having under bevels on theirinner edgesoverlappingthe upper bevels on the outer edges of the smaller elias side barsfand a :furniture stick having ends beveled and shouldered to lit and abut the `inner edges ot the larger chase longitudinal bars, and means for plantingthe smaller chase within the larger chase.

S). it" niiaster chase including side bars and end bars forming anlopening, and a smaller chase `including side bars and end bars bodily located in the opening, the inner edges of the side bars of the master chase being shaped `to overlap the outer edges ot the side bars oit the smaller chase, and means for varying the distance between the end bars ofthe separate chases and `tor clamping the smaller' chase Within the master chase.

4 e memes 10. A mster chase including end bars, 4longitudinalbars extending between the end bau-s, and meansfor`ya1'ying the distance between the longitudinal ba1s`, the longitudinal 5` bars and the end bars forming an opening, and a` smaller chase including side bars and end bars bodily located in the opening, the i inner edges of the longitudinal bars of the master chase being shaped to overlap the outer edges of the side bars of the smaller chase, and means for clamping the smaller chase Within the master chase.

RALPH MeCAHAN. 

